Utility knife



FIG. 1 is a top-right perspective view of a utility knife according to the present invention;

FIG. 2 is a bottom-left perspective view of the present invention;

FIG. 3 is a left side elevational view of the present invention;

FIG. 4 is a right side elevational view of present invention;

FIG. 5 is a front elevational view of the present invention;

FIG. 6 is a rear elevational view of the present invention;

FIG. 7 is a top plan view of the present invention; and,

FIG. 8 is a bottom plan view of the present invention.

The broken line showing of the blade is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a utility knife, as shown and described. 